Abstract

The dependence of the just-noticeable difference (jnd) in interaural time delay on interaural amplitude difference and interaural time delay was measured for a 100-μsec click stimulus using a symmetric, two-interval, two-alternative-forced-choice plus feedback paradigm. Results are similar to those obtained for 500-Hz tone bursts [R. H. Domnitz, J. Acoust. Soc. Am. 53, 1549–1552 (1973)]. As in the tonal data, the most interesting aspect of the data is the asymmetric (about 0 μsec) dependence on interaural time delay when the interaural amplitude ratio is large. The jnd was measured for amplitude ratios of 0. 6. 12. and 20 dB. Results for amplitude ratios less than 20 dB are very consistent, whereas results for 20 dB are more variable. [Work supported by NIH.]

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